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359 problems total

Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)
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TitleDifficultyVideosCompanies
Check if a graph is minimally-connectedmedium-
facebook
Conditional selection between x and y with bitwise operationsmedium-
facebook
Determining the Existence of a Valid Secret Code in Mastermind Based on Given Guesses and Scores Guesses and Scoresmedium-
facebook
Divide Two Integersmedium-
adobeamazonapple
Fisher-Yates Shufflemedium-
facebook
Flatten a Multi-Level Linked List level by levelmedium-
facebook
Implement Elo Rating Systemmedium-
facebook
Add Two Numbers represented as Linked List in Reversed Ordermedium-
adobeaetionairbnb
Longest Substring Without Repeating Charactersmedium
adobealationalibaba
Longest Palindromic Substringmedium
adobeairbnbalibaba
Reverse Integermedium-
adobeamazonapple
Convert String to Integer atoimedium-
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Container With Most Watermedium
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Integer To Romanmedium-
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3Sum0 - Find three elements in an array that sum to a zeromedium
adobeakuna-capitalalibaba
3Sum - Closestmedium-
adobeamazonapple
Letter Combinations of a Phone Numbermedium-
amazonappleatlassian
4Summedium-
adobeamazonapple
Remove Nth Node From End of Listmedium
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Generate Parenthesesmedium-
adobealibabaamazon
Largest String With Swapsmedium-
facebook
Minimum and Maximum in an array with Optimal Comparisonsmedium-
facebook
Next Bigger Integer with Same Number of 1-Bitsmedium-
facebook
Qux Color Transformationmedium-
facebook
Rearranging Array Elements by Index Mappingmedium-
facebook
Reservoir Sampling Explainedmedium-
facebook
Rotate an Array to Leftmedium-
facebook
Swap Nodes in Pairsmedium-
adobeamazonapple
Next Permutationmedium-
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Search in Rotated Sorted Arraymedium
adobealibabaamazon
Find first and last positions of target element in sorted arraymedium-
airbnbamazonapple
Valid Sudokumedium-
adobeamazonapple
Count and Say Sequencemedium-
adobeamazonapple
Combination Sum 1medium
airbnbakuna-capitalamazon
Combination Sum 2 - Cant Reuse same elementmedium-
adobeamazonapple
Multiply Stringsmedium-
amazonappleexpedia
Rotate n x n matrix by 90 degreesmedium
adobeakuna-capitalamazon
Jump Game 2 - Get min jumpsmedium-
adobeamazonapple
Permutations of Array 1medium-
adobeamazonapple
Permutations of Array 2 - Array has duplicatesmedium-
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Group Anagramsmedium
adobeaffirmamazon
Implement Power Function 1medium-
adobeamazonapple
Maximum Subarray Summedium
adobealibabaamazon
Spiral Matrix 1 - Returnmedium
adobeamazonapple
Jump Game 1 - Check if it reaches last indexmedium
adobeamazonapple
Merge Overlapping Intervalsmedium
adobealibabaamazon
Insert Intervalmedium
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Spiral Matrix 2 - Generatemedium
adobeamazonapple
Rotate Linked List to Rightmedium-
adobeairbnbamazon
Unique Paths in Grid 1 - Count all paths moving right or downmedium
adobealibabaamazon
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